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Finding the Fourth Proportional to 72,655.48, 100,330.14 and 45,845.56

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Solution

The fourth proportional to 72,655.48, 100,330.14 and 45,845.56 is: 63,308.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,655.48 : 100,330.14 = 45,845.56 : x
  2. Step 2: Convert to fraction form
    72,655.48/100,330.14 = 45,845.56/x
  3. Step 3: Cross multiply
    72,655.48x = 100,330.14 × 45,845.56
  4. Step 4: Simplify right side
    72,655.48x = 4,599,691,453.18
  5. Step 5: Solve for x
    x = 4,599,691,453.18/72,655.48
  6. Step 6: Final answer
    x = 63,308.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.